Kennametal 1113522 Grooving Insert NR3047 K68 Carbide

Product Description

The KENNAMETAL 1113522 is a solid carbide grooving insert designed for precision grooving and parting operations on CNC lathes and turning centers. Part of the Top Notch series, this uncoated insert carries a K68 manufacturer grade and a C3 material grade, making it well suited for cutting cast iron, non-ferrous metals, and abrasive materials where a sharp, hard edge is required. The insert features a neutral rake geometry, a full radius profile with a corner radius of 1.19 mm, and a cutting width of 2.39 mm. Machining professionals and toolroom technicians rely on this insert for repeatable, tight-tolerance groove profiles.

This insert is intended for use in Top Notch compatible grooving toolholders and blade-style boring bars configured for NR-style inserts. The NR3047 size designation applies to standard Top Notch tooling systems. It is suited for light to moderate-duty grooving applications in production turning environments, including external grooving on ferrous and non-ferrous workpieces. Right-hand cutting orientation is standard for this configuration. The insert size 3047 and MSC/Manufacturer cross-reference number NR3047R/L confirm fitment within the Top Notch system family as stated by the manufacturer.

Key Features

• Solid carbide construction with K68 grade for hardness and wear resistance on abrasive materials
• Bright/uncoated finish maintains a sharp cutting edge without coating buildup
• Full radius geometry with 1.19 mm corner radius produces smooth groove floors
• Neutral rake angle provides balanced cutting forces for stable groove operations
• 2.39 mm cutting width with a maximum depth of cut of 3.81 mm suits standard grooving passes
• NR insert style fits Top Notch series toolholders and blades

Compatibility

Designed for use with Top Notch series toolholders and blade systems accepting NR3047-style inserts. Cross-reference number NR3047R/L is confirmed in manufacturer data. Verify toolholder pocket specifications before installation.

Installation Notes

Installation of grooving inserts should be performed by qualified machinists or toolroom technicians following the toolholder manufacturer's seating and clamping procedures. Power down and lock out the machine spindle before changing inserts. Ensure the insert seats fully and evenly in the pocket before torquing the clamping screw to the toolholder manufacturer's specified value. Inspect the insert and pocket for chips or debris that could affect seating and cause insert breakage or poor surface finish.